§502.320. Service.

All claims, resubmitted claims, petitions to intervene and rulings thereon, notices of oral hearings, notices of oral arguments (if necessary), decisions of the administrative law judge, notices of review, and Commission decisions shall be served by the administrative law judge or the Commission. All other pleadings, documents and filings shall, when tendered to the Commission, evidence service upon all parties to the proceeding. Such certificate shall be in substantially the following form: